Emerson 3051N manual Calibration Overview, Configure the Analog Output Parameters

Page 27

Reference Manual

00809-0100-4808, Rev CA June 2008

Rosemount 3051N

Calibration Overview

Complete calibration of the Rosemount 3051N Pressure Transmitter involves the following tasks:

Configure the Analog Output Parameters

•Set Process Variable Units (page 2-8)

•Set Output Type – Linear or Square Root (page 2-8)

•Set the Range Points (page 2-9)

•Set Damping (page 2-12)

Calibrate the Sensor

•Full Trim (page 2-18)

•Zero Trim (page 2-17)

Calibrate the 4–20 mA Output (Digital-to-Analog [D/A] Signal Conversion)

•4–20 mA Output Trim (page 2-19)or

•4–20 mA Output Trim Using Other Scale (page 2-19)

Figure 2-7illustrates the Rosemount 3051N transmitter data flow. This data flow can be summarized in four major steps:

1.A change in pressure is measured by a change in the sensor output (Sensor Signal).

2.The sensor signal is converted to a digital format that can be understood by the microprocessor (Analog-to-Digital Signal Conversion).

3.Corrections are performed in the microprocessor to obtain a digital representation of the process input (Digital PV).

4.The Digital PV is converted to an analog value (Digital-to-Analog Signal Conversion).

Figure 2-7also identifies the approximate transmitter location for each calibration task. Note that the data flows from left to right, and a parameter change affects all values to the right of the changed parameter.

Not all calibration procedures should be performed for each Rosemount 3051N transmitter. In addition, some procedures are appropriate for bench calibration but should not be performed during field calibration. Table 2-2identifies the recommended calibration procedures for each type of Rosemount 3051N transmitter for both bench and field calibration.

2-15

Image 27

Contents Reference Manual Important Notice -- Errata Rosemount 3051N Return of Material Changes from June 2006 to June OldChanges Rosemount 3051N Table of Contents Installation TroubleshootingSpecifications Reference Data Options Appendix aHart Communicator Glossary Index Section Introduction Using this ManualRosemount 3051N Transmitter Functions Overview Safety MessagesAlarm Level Verification TransmitterSecurity Physical Removal Local Zero and Span Local Keys Configuring Transmitter Alarm and Security Jumper ProcedureElectronics Board Setting the Loop to Manual Wiring Diagrams Bench Hook-up Wiring Diagrams Field Hook-up Review Configuration Data Check OutputProcess Variables Set Output Sensor TemperatureBasic Setup Set Process Variable UnitsRerange with a Communicator Only RerangeRerange with a Pressure Input Source and a Communicator Span and Zero Adjustment Buttons Diagnostics Service Detailed SetupTransmitter Test Loop TestCalibration Transmitter Bench Calibration Tasks Field Calibration Tasks Calibration Overview Configure the Analog Output ParametersURV Sensor TrimTypical Zero vs Non-zero-Based Application Illustrations Zero TrimDigital Trim Connection Drawing 4-20 mA Transmitters Full TrimAnalog Output Trim Digital-to-Analog Trim Using Other ScaleRecall Factory Trim Recall Factory Trim- Sensor Trim Recall Factory Trim- Analog OutputZero Effect HTc = URV + S URV Ps Rosemount 3051N Section Installation Rosemount 3051N Typical Installation Flowchart General Considerations Special Draft Range ConsiderationsMechanical Considerations 156 181 16 x 11/4 Bolts for Mounting to 54.1 Transmitter 120 127 66.8 Traditional Flange Option Code H2 Dimensional Drawing Mounting Rosemount 3051N GAS or Liquid Service GAS Service Steam Service Process Connections Housing Rotation Power SupplyElectrical Considerations Power Supply Load Limitations WiringAccess Requirements Cover Installation Grounding the Transmitter CaseEnvironmental Considerations Troubleshooting Returning Rosemount Products and Materials Symptom Corrective ActionsSeismic Nuclear SpecificationsModel Range Code Hydrostatic Test Pressure Drift Performance SpecificationsAmbient Temperature Effect12 Reference AccuracyRange Code Static Pressure Zero Effect1 Power Supply Effect Load Effect Mounting Position EffectOverpressure Effect Static Pressure Effect Range Code Overpressure EffectOutput Functional SpecificationsService Temperature LimitsSpan and Zero, Zero Elevation, Suppression Range Minimum Span Upper URL Lower LRLRange Code Minimum Time Constant Tc Including Dead Time Td Overpressure Limits Burst Pressure Maximum WorkingPressure12 Static Pressure LimitsPhysical Specifications Materials of Construction Option Code Description Add Ordering Information Meters optional Configuration InformationHousing Material Conduit Entry Size Mounting Bracket OptionsDate On Rosemount 3051N Exploded View with Coplanar Process Flange Rosemount 3051N Rosemount 3051N Section Options Overview Safety Messages LCD MeterCustom Meter Configuration Exploded View of the Rosemount 3051N with Optional LCD Meter Installing the MeterRosemount 3051N Error Diagnostic MessagesPress Limit Mounting Brackets OperationTransient Protection Terminal Block T1 Traditional Flange H2Transient Protection Terminal Block T1 Rosemount 3051N Appendix a Hart Communicator Introduction Safety MessagesRosemount 3051N Online Menu Function Hart Fast Key Sequence Connections and Hardware Figure A-3. Rosemount Hart terminal access doorFigure A-4. Bench Hook-up MA Transmitters Rosemount Communicator KeysAction Keys Function Keys Alphanumeric and Shift KeysData Entry Main Menu Fast Key SequencesFast Key Sequence Conventions Fast Key Sequence Example Menus FunctionsOnline Menu Touch Multifunction LED Processing Indication Alphanumeric KeysMultifunction LED Touch ScreenRosemount 3051N Diagnostic Messages Fast Key Sequences Hot Key optionsMessage Description Rosemount 3051N Uploadvariable Rosemount 3051N Rosemount 3051N Glossary Smart Family Index 00809-0100-4808, Rev CA June Security Page ¢00809-0100-4801V¤